The leaked version, which also appears to be the final version, of Gingerbread for the G2x is now available for those running rooted devices. This is a completely stock build (aside from the fact that it has been pre-rooted), so you will get exactly what you saw in the previously posted video. Didn't see the video? Here it is again:

You can grab the download now from MoDaCo, but it's worth noting that, even though it's basically the same phone, this will not work on the Optimus 2X.